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How can you check to see if the heater blower is bad on a 1999 grand prix?
Wiki User
∙ 9y ago
You can test your heater blower motor by connecting a ground wire to the ground. Connect a power wire, from the battery to the positive post. If the blower motor turns it is working, and if it does not it is bad.
Wiki User
∙ 9y ago
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